// 定义变量
@bgcColor: aliceblue;
@textColor: rgb(117, 114, 114);
@fontSize: 42px;

.flex-center {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}

.box {
    width: 100%;
    height: 100vh;
    .flex-center();

    div {
        width: 90%;
        height: 24%;
        border-radius: 10px;
        .flex-center();
        font-size: @fontSize;
        background-color: @bgcColor;
        color: @textColor;
    }
}